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Someone's argument is up the creek....
Don't like different metals together?
Surely a brass SWA gland & a galv steel box are different? They might expand/contract at different rates....
What about brass earth terminals fixed to steel earth strips/bars (as in a socket)?
Or earth flyleads to galv back boxes? Or copper conductors into brass terminals?
Or Aluminium conductors into brass terminals, for that matter?
Don't like different metals together?
Surely a brass SWA gland & a galv steel box are different? They might expand/contract at different rates....
What about brass earth terminals fixed to steel earth strips/bars (as in a socket)?
Or earth flyleads to galv back boxes? Or copper conductors into brass terminals?
Or Aluminium conductors into brass terminals, for that matter?